KR20130127416A - Gel bait for controlling crawling harmful insects - Google Patents

Abstract

The present invention relates to the production of novel gel baits for controlling harmful insects, in particular crawling insects. The invention also relates to the use of bait of this type, to a method of making bait of this type, and to a method of controlling harmful insects.

Description

Gel bait for controlling crawling harmful insects {GEL BAIT FOR CONTROLLING CRAWLING HARMFUL INSECTS}

The present invention relates to the provision of a novel gel bait for controlling harmful insects, in particular crawling harmful insects. The invention also relates to the use of such baits, methods of making such baits, and methods of controlling harmful insects.

Various methods are known for controlling insects. Among them, it is known to use bait according to the prior art. Such baits apply where the adult group primarily resides. The bait may be provided in the form of granules. However, granules can only be applied to horizontal structures, not to vertical structures. Bait may also be provided as a liquid formulation, also referred to as a "coated formulation". Such liquids are provided to the user in the form of concentrates. The user must prepare a diluent to use itself and then spray / apply.

WO 97/11602 describes baits for controlling insects, which bait consists of a starting material that can be gelled by hydration, and an active ingredient selected from the group of 1-arylpyrazoles.

WO 91/07972 also describes bait for insect control consisting of carrageenan and certain insecticides as gelling agents.

It has been known for many years to use gels applied in the form of dots as bait to control crawling insects such as ants or cockroaches.

The bait used usually loses its attractiveness to the harmful insects to be controlled in its storage process due to the loss of moisture or fragrance material. Moreover, many added fragrance substances change their odor over the prolonged storage period of the product. A further disadvantage of the prior art baits is that by adding fragrance substances such as orange or banana flavors, the baits also appear attractive to other living things, such as dogs, cats or children. Access to poison baits is complicated, for example, and thus can be prevented by expensive packaging or bait boxes.

One concept for introducing sensitive, chemically or physically incompatible volatile components is to use a capsule that surrounds these components. In capsules, the two types are distinguished. First, there is a capsule in which the component has a core-coat structure surrounded by walls or barriers. Secondly, there is a capsule in which the components are distributed in a matrix of matrix-forming material. Such capsules are also referred to as "speckles" and are used in detergents in liquid or gel form.

For example, US 6,855,681 discloses a detergent composition comprising the matrix-encapsulated active ingredient. The matrix of the capsule contains a hydrated anionic gum and the encapsulated active ingredient is preferably a fragrance. DE-A 43 09 756 also describes microcapsules. They have a core material coated with an impermeable coat of glutaraldehyde-crosslinked gelatin. Microcapsules play an important role in the controlled release of active substances.

WO 01/30144 discloses microbeads having a hydrophilic matrix core and an adjacent second ionic composite layer. Alginates are mentioned as possible matrix materials. The core matrix may comprise the active material. Microbeads are added in the form of a suspension to an aqueous or solvent-based solution.

WO 00/32043 describes water insoluble polymeric beads having a polymeric matrix containing a plurality of droplets of volatile hydrophobic compounds. The compound is preferably pheromone. Alginates are disclosed as polymeric matrices. The beads disclosed there also play an important role in the controlled release of the active substance.

In conclusion, although there are incentives to the associated harmful insects to be controlled, in particular crawling harmful insects, there is still a problem of providing storage-stable baits, which can be applied without complex packaging and can also be applied to vertical structures and / or high places. do. Moreover, there is still a problem that the bait of the prior art does not show adequate efficacy when used against larvae or larvae.

It was therefore an object of the present invention to provide improved bait and bait formulations for controlling crawling insects, in particular cockroaches, which show a rapid onset of activity and also show timely proper activity of application even after storage and transport. The precondition is that the components of the bait are not decomposed or volatilized in advance. Another object is to provide bait without the complexity and thus expensive packaging, and the bait has no attraction to non-purpose organisms. Another object is that the bait should also exhibit particularly good activity against larvae or larvae.

Summary of the Invention

In addition to insecticidal active substances, it has now been found that baits comprising capsules prepared by the dropping method and comprising one or more feeding stimulants in the polymeric matrix solve the problem of the present invention.

The present invention therefore has at least one insecticidal active material, bait material in gel form, and a diameter of 0.1 to 5 mm, preferably 0.5 to 2 mm, particularly preferably 0.8 to 1.5 mm, A bait containing a water-insoluble polymeric capsule having a polymer matrix containing droplets of stimulant.

Description of Specific Embodiments

Unless otherwise specified, the following definitions apply and percentages are by weight.

The bait according to the invention contains at least one insecticidal active substance. Examples of suitable insecticidal actives are as follows:

(1) acetylcholine esterase (AChE) inhibitors, such as

Carbamates such as allanicarb, aldicarb, bendiocarb, benfuracarb, butocarboxim, butoxycarboxym, carbaryl, carbofuran, carbosulfan, ethiophencarb , Phenobicarb, formanate, furathiocarb, isoproparb, methiocarb, methomyl, metocarb, oxamyl, pyrimicarb, propoxur, thiodicarb, thiopa Ox, triazamate, trimethacarb, XMC and xylylcarb; or

Organophosphates such as acetate, azametifoss, azinfos (-methyl, -ethyl), cardusafos, chlorethoxyfoss, chlorfenbinfos, chlormephos, chlorpyriphos (-methyl), coomafoss , Cyanoforce, demethone-S-methyl, diazinone, dichlorvos / DDVP, dicrotophos, dimethoate, dimethylbinfos, disulfotone, EPN, ethion, etopropos, pampur, phenami Phos, phenythrothione, pention, phosphthiazate, heptenophos, isofenfos, isopropyl O- (methoxyaminothiophosphoryl) salicylate, isoxation, malathion, mecarbam, metamido Phos, methidathione, mebinfos, monoclotophos, naled, ometoate, oxydemethone-methyl, parathion (-methyl), pentoate, forate, posalon, phosphmet, phosphamidone, bombardment, Pyrimifos (-methyl), propenophos, propetafoam, prothiophos, pyraclopho S, pyridapention, quinalfoss, sulfotep, tebupyrimfoss, temefos, terbufoss, tetrachlorbinfos, thiomethones, triazofoss, trichlorpons and bamidothiones.

(2) GABA-regulated chloride channel antagonists such as

Organochlores such as chlordan and endosulfan (alpha-); or

Fiprolol (phenylpyrazole), for example etiprolol, fipronil, pyraflulol and pyriprolol.

(3) sodium channel modulators / voltage-dependent sodium channel blockers, such as

Pyrethroids such as acrinatrin, alletrin (d-cis-trans, d-trans), bifenthrin, bioaletrin, bioaletrin-S-cyclopentenyl, bioresmethrin, cycloprotrin, Cyfluthrin (beta-), sihalothrin (gamma-, lambda-), cipermethrin (alpha-, beta-, theta-, zeta-), cifenotrine [(1R) -trans isomer], deltamet Lean, dimefluthrin, empentrin [(EZ)-(1R) isomer], espenvalrate, etofenprox, phenpropatrine, fenvalrate, flucitrinate, flumethrin, fluvalinate (Tau-), halfenprox, imiprotrin, metofluthrin, permethrin, phenotrine [(1R) -trans isomer], praletrin, proflutrin, pyrethrin (pyrethrum), resmethrin , RU 15525, silafluorophene, tefluthrin, tetramethrin [(1R) -isomer], tralomethrin, transfluthrin and ZXI 8901; Or DDT; Or methcyclocyclo.

(4) nicotinic acetylcholine receptor agonists, such as

Neonicoconoids such as acetamiprid, clothianidine, dinotefuran, imidacloprid, nitenpyram, tiacloprid, thiamethoxam; Or nicotine.

(5) allosteric acetylcholine receptor modulators (agonists), such as

Spinosynes, such as spinetoram and spinosad.

(6) chloride channel activators such as

Avermectin / milvemycin, for example abamectin, emamectin-benzoate, lepimethin and milbimetin.

(7) juvenile hormone analogs, for example hydroprene, quinoprene, methoprene; Or phenoxycarb; Pyriproxyfen.

(8) active substances with unknown or unspecified mechanisms of action, such as

Fumigants such as methyl bromide and other alkyl halides; or

Chloropicrin; Sulfuryl fluoride; Borax; Tartar nausea.

11 microorganisms disturbance of insect tent agents, such as Bacillus Turin group N-Sys (Bacillus thuringiensis) subspecies Israel alkylene sheath (israelensis), Bacillus spa Erie kusu (Bacillus sphaericus), Bacillus Turin group N-Sys subspecies ahyijawayi (aizawai), Bacillus Turin group N-Sys Subspecies kurstaki , Bacillus thuringiensis subspecies tenebrionis , and BT plant proteins such as Cry1Ab, Cry1Ac, Cry1Fa, Cry2Ab, mCry3A, Cry3Ab, Cry3Bb, Cry34 / 35Ab1.

(12) inhibitors of oxidative phosphorylation, ATP disruptors such as diafenthiuron; or

Organotin compounds such as azocyclotin, cyhexatin, fenbutatin oxide; Or propargite; Tetradipon.

(13) Decoupling agents for oxidative phosphorylation by interfering with H-proton gradients such as chlorfenapyr and DNOC.

(14) Nicotine-based acetylcholine receptor antagonists such as benzaltope, cartope (-hydrochloride), thiosilam, and thiosultope (-sodium).

(15) Type 0 chitin biosynthesis inhibitors, such as benzoylurea, for example bistrifluuron, chlorfluazuron, diflubenzuron, flucycloxonon, flufenoxuron, hexaflumuron, lufenuron, novaluron , Nobiflumuron, teflubenzuron and triflumuron.

(16) Type 1 chitin biosynthesis inhibitors such as buprofezin.

(17) Active substances that inhibit stripping, such as siroma.

(18) molar hormone agonists / disruptors, such as

Diacylhydrazines such as chromafenozide, halofenozide, methoxyphenozide and tebufenozide.

(19) Octopamine-based agonists such as Amitraz.

(20) complex-III electron transport inhibitors, such as hydramethylnon; Acequinosyl; Fluacrypyrim.

(21) Complex-I electron transport inhibitors selected from the group of METI acaricides, eg, phenazaquin, fenpyroximate, pyrimidipene, pyridaben, tebufenpyrad, tolfenpyrad; Or rotenone (Deris).

(22) voltage-dependent sodium channel blockers such as indoxacarb; Metaflumizone.

(23) acetyl-CoA-carboxylase inhibitors such as tetronic acid derivatives such as spirodiclofen and spiromesifen; Or tetramic acid derivatives, for example spirotetramat.

(24) complex-IV electron transport inhibitors such as phosphines such as aluminum phosphide, calcium phosphide, phosphine, zinc phosphide; Or cyanide.

(25) Complex-II electron transport inhibitors, such as cynopyrapene.

(28) Lianodine receptor effectors such as diamides, for example chloranthraniliprole (linacyrpyrrole), cyanraniloprolol (siazipyr) and flubendiamide.

Other active substances with unknown mechanisms of action such as azadilactin, amidoflumet, benzoxmate, bifenazate, quinomethionate, creolite, cyflumetofen, dicopol, flufenerim, Pyridalyl and pyrifluquinazone; Or the following known active compounds

4-{[(6-bromopyrid-3-yl) methyl] (2-fluoroethyl) amino} furan-2 (5H) -one (known from WO 2007/115644), 4-{[(6 -Fluoropyridy-3-yl) methyl] (2,2-difluoroethyl) amino} furan-2 (5H) -one (known from WO 2007/115644), 4-{[(2-chloro -1,3-thiazol-5-yl) methyl] (2-fluoroethyl) amino} furan-2 (5H) -one (known from WO 2007/115644), 4-{[(6-chloropy Lead-3-yl) methyl] (2-fluoroethyl) amino} furan-2 (5H) -one (known from WO 2007/115644), 4-{[(6-chloropyrid-3-yl) Methyl] (2,2-difluoroethyl) amino} furan-2 (5H) -one (known from WO 2007/115644), 4-{[(6-chloro-5-fluoropyrid-3- Yl) methyl] (methyl) amino} furan-2 (5H) -one (known from WO 2007/115643), 4-{[(5,6-dichloropyrid-3-yl) methyl] (2-fluoro Roethyl) amino} furan-2 (5H) -one (known from WO 2007/115646), 4-{[(6-chloro-5-fluoropyrid-3-yl) methyl] (cyclopropyl) amino } Furan-2 (5H ) -One (known from WO 2007/115643), 4-{[(6-chloropyrid-3-yl) methyl] (cyclopropyl) amino} furan-2 (5H) -one (EP-A-0 539 588), 4-{[(6-chloropyrid-3-yl) methyl] (methyl) amino} furan-2 (5H) -one (known from EP-A-0 539 588), [(6-chloropyridin-3-yl) methyl] (methyl) oxido-λ ⁴ -sulfanylidenecyanamide (known from WO 2007/149134), [1- (6-chloropyridin-3-yl) Ethyl] (methyl) oxido-λ ⁴ -sulfanylidenecyanamide (known from WO 2007/149134), and diastereomers (A) and (B) thereof (also known from WO 2007/149134),

≪ Formula (A)

≪ Formula B >

[(6-trifluoromethylpyridin-3-yl) methyl] (methyl) oxido-λ ⁴ -sulfanylidenecyanamide (known from WO 2007/095229), sulfoxaflor (also from WO 2007/149134 Known), 11- (4-chloro-2,6-dimethylphenyl) -12-hydroxy-1,4-dioxa-9-azadispiro [4.2.4.2] tetrades-11-ene-10- On (known from WO 2006/089633), 3- (4'-fluor-2,4-dimethylbiphenyl-3-yl) -4-hydroxy-8-oxa-1-azaspiro [4.5] des- 3-en-2-one (known from WO 2008/067911) and 1- {2,4-dimethyl-5-[(2,2,2-trifluoroethyl) sulfinyl] phenyl} -3- ( Trifluoromethyl) -1H-1,2,4-triazole (known from WO 1999/55668).

Insecticidal active substances are preferably selected from the group comprising nicotinic acetylcholine receptor agonists, fiprols, allosteric acetylcholine receptor modulators, voltage-dependent sodium channel blockers and chloride channel activators.

Especially preferred are imidacloprid, clothianidine, fipronil, spinosad, indoxacarb and abamectin.

Imidacloprid is very particularly preferred. In a further particularly preferred embodiment, the bait according to the invention contains fipronil. It is likewise particularly preferred that the bait according to the invention contains clothianidine.

Baits according to the invention may contain a feedant, a feeding stimulant and, if appropriate, an attractant. Eating agents refer to ingredients that function to feed insects. Eating stimulants are all ingredients that enhance or sustain the feeding process in insects. Attractant means any substance that can attract insects in the distance. It is possible to use mixtures of all three components. However, it is preferable to use only eating and eating stimulants.

Examples of suitable food / feeding agents used for bait include water, cereals such as flour, jade, fine flour, rice bran, starches such as potato starch, corn starch and the like, various sugars such as sucrose, maltose, arabinose , Galactose, sorbitol, dextrose, fructose, sorbitol, corn syrup, maple syrup, molasses, coca cola syrup, various invert sugars (Invertix), molasses honey and the like, and glycerol. For example meat, meat extracts and proteins such as milk powder, fish meat, fish extracts or seafood, seafood extracts, insects, insect extracts or yeast, yeast extracts and the like. Other suitable bait materials are fats and oils such as corn, olives, caraway, ground coles, sesame seeds, soybeans, vegetable oils made from sunflowers, animal fats and oils, and oils obtained from fish and the like. The bait material may be used alone or in a mixture of any ratio of one or more materials. Especially preferred are feeding agents such as, for example, water, simple or complex sugars, meat extracts, animal fats and oils.

Examples of suitable feeding stimulants used for bait are extracts from meat, fish or insects. Other substances suitable for food stimulation include certain natural or synthetic aromatic substances, such as meat aromas, fish aromas, seafood aromas, onion aromas, milk aromas, butter aromas, cheese aromas, fruit aromas such as apples, apricots, bananas, blackberries. , Cherry, currant, gooseberry, grapefruit, raspberry or strawberry (pure, syrup or extract). Particularly preferred eating stimulants are, for example, extracts from meat, fish or insects and fruit aromas. Very particularly suitable fruit aroma materials are banana aromas.

Pheromones have not yet been used commercially as bait for crawling insects, especially cockroaches. The following examples of attractants that can be used in insect bait gels may be mentioned for the completion: Gathering pheromones of German cockroaches (fecal extract, carboxylic acid, blastellanoside A and B, dimethylamino- (1-) 2 -Methyl-2-propanol, dimethylamine and its hydrochloride), sex pheromones of German cockroaches (dimethyl- (3,11-)-2-nonacosanone, hydroxy- (29-)-3,11-dimethyl- 2-nonacosanone, oxo- (29-) 3,11-dimethyl-2-nonacosanone, 3,11-dimethyl-2-heptacosanone, gentiyl quinone isovalerate = bellatelquinone), US Cockroach Sex pheromones (low macratriene = periplanone A, low macradiene = periplanone B and derivatives thereof) and mimetics (e.g. (+)-bornyl acetate, fenkyl acetate, low macrene D, ver. Benyl Acetate, Verbenyl Propionate), Sex Pheromone of Brown-Band Cockroach (dimethylheptanyl-5- (2 ', 4')-3-methyl-2H-pyran-2- On = supelapyron, methyl- (3-), 5 (2,4-dimethylheptanyl) -alpha-pyron).

In a preferred embodiment of the bait according to the invention, the bait material contains at least one bait feeding agent and, if appropriate, at least one feeding stimulant.

In another embodiment of the bait according to the invention, the bait material contains at least one bait feeding agent and at least one feeding stimulant.

The capsules contained in the bait according to the invention may preferably also comprise, besides the polymeric matrix, an eating stimulant, and, if appropriate, an attractant or colorant embedded in said matrix. The capsules contained in the bait according to the invention, in addition to the polymer matrix, particularly preferably also comprise at least one feeding stimulant and colorant.

The dropping method is used to produce the capsules contained in the bait according to the invention. Monodisperse spherical capsules are obtained by dropping an aqueous mixture containing a feeding stimulant and a water-soluble crosslinkable polymer, and, if appropriate, a colorant, and then crosslinking the polymer.

The amount of crosslinkable polymer in the matrix aqueous solution is preferably in an amount of 0.01 to 5% by weight, particularly preferably 0.1 to 3% by weight, particularly preferably 0.5 to 2% by weight.

The amount of feeding stimulant used in the aqueous matrix solution is 0.01 to 50% by weight, preferably 0.05 to 10% by weight, particularly preferably 0.1 to 5% by weight.

The amount of colorant used in the aqueous matrix solution is from 0.001 to 5% by weight, preferably from 0.05 to 1% by weight, particularly preferably from 0.08 to 0.1% by weight.

The crosslinkable polymer is water soluble so that it can be used to prepare an aqueous solution at least to the above mentioned concentration upper limit. Another crosslinkable polymer is preferably an ionotropic crosslinkable polymer. The latter is in particular selected from the group comprising carrageenan, alginate and gellan gums and mixtures thereof, sodium alginate being particularly preferably used as matrix-forming crosslinkable polymers.

Using the dropping method, in a simple way it can be ensured that the particles become spherical, in other words almost round, in particular in all other space dimensions the diameter is 15% less than its diameter along the dimension of the largest space, It is preferably as small as 10% or less, particularly preferably 5% or less.

The matrix-forming crosslinkable polymer is preferably selected from materials from the group comprising carrageenan, alginate and gellan gum and mixtures thereof, with sodium alginate being particularly preferred.

Alginate is a salt of alginic acid of natural origin found as a cell wall component in brown algae (Phaeophycea). Alginates are acidic carboxyl-containing polysaccharides having a relative molecular weight MR of approximately 200,000, consisting of various ratios of D-mannuronic acid and L-guluronic acid bound by 1,4-glycosidic bonds. Sodium, potassium, ammonium and magnesium alginate are water soluble. The viscosity of the alginate solution depends in particular on the molar mass and the counterion. Calcium alginate, for example, will form a thermally irreversible gel at certain weight ratios. Sodium alginate can be crosslinked by, and providing a solution of a highly viscous with water, 2-or trivalent metal ion, such as interactions with Ca ^{+ 2.} In this way, the components present in the aqueous sodium alginate solution are enclosed in the alginate matrix. Preference is given to using CaCl ₂ solutions for the crosslinking process.

Carrageenan is an extract of red algae belonging to Floredeae (Chondrus crispus and Gigartina stellata). Carrageenan is crosslinked in the presence of K ⁺ ions or Ca ^{2 +} ions. .

Gellan gum has no branch with tetrasaccharide repeat units consisting of monomeric glucose, glucuronic acid and rhamnose, with almost all repeat units esterified with L-glycerate and one repeat unit across one esterified with acetate Anionic microbial heteroexopolysaccharides. Gellan black K ⁺ ions, is cross-linked in the presence of Na ⁺ ion, Ca ^{2 +} ions or Mg ^{2 +} ions. Preferred materials for the matrix are alginates, among those mentioned above.

The material can be particularly well crosslinked with cations to provide crosslinked insoluble gels. By dropping a solution of these materials into a cation-containing solution, it is possible in a simple manner to produce essentially spherical capsules which further contain a solution component therein. If the solution of the crosslinking material comprises an additional component, in this case an attractant, the latter is surrounded and protected by the capsule material after the crosslinking process. It is possible to remove the solvent, in particular water, at least to some extent from the interior of the capsule by drying. It is not usually necessary to remove it completely, especially if you want to introduce the capsule into a gel-like bait material which likewise contains a solvent already in question, especially water, in which case the inside of the capsule and the capsule This is because solvent equilibrium between the enclosing outer continuous liquid phases will be established more quickly.

First of all, it is preferable to dissolve the crosslinkable polymer sufficiently in water, and then add a feeding stimulant and, if appropriate, a colorant, and then mix. This solution is called a dropping solution. The term hardening bath means an aqueous cation-containing solution. The dropping is then carried out by transferring the dropping solution to the supply vessel and the curing bath to the storage vessel. The dripping solution is pumped from the feed vessel into the dripping head. The nozzle, and thus the fluid stream, is vibrated by a vibrating device, preferably a membrane. This allows the fluid stream to break down into individual droplets of the same size. The resulting droplets are lowered into the curing bath and the incoming droplets are crosslinked to provide a capsule. After preparation, the capsules thus obtained are washed and packed with fully-mineralized water.

Within the framework of the production process, the capsules can have any shape, but preferably they are at least nearly spherical. Moreover, the dripping process can easily ensure that they are monodisperse, in other words that all capsules are essentially the same size, since constant dripping conditions from the same dripping fluid will produce the same droplets.

Coloring the capsule may be desirable for aesthetic reasons. To this end, the capsule may contain one or more pigments such as pigments or colorants. Preferably, it will be obtained from an aqueous matrix solution, for which the aqueous solution contains pigments, in particular pigments used in the food or textile industry. Particularly preferred pigments are indanthrene blue T-BCs.

The bait according to the invention is in the form of a gel. For the purposes of the present invention, gels are colloids in which the dispersed phase is combined with the continuous phase to give a jelly-phase product having the following properties: 4,000 to 100,000 mPas, preferably 4,000 to 10,000 mPas dynamic viscosity (20 ° C., Rotary viscometer, shear rate 10 / s).

The bait according to the present invention may, for example, mix a gelling agent with water, liquefy the mixture by heating, add insecticidal active substances, polymeric capsules, bait substances, or other auxiliaries if necessary, and It can be prepared by cooling and solidifying the mixture. The product thus obtained can be formulated into any desired shape by making it into a suitable shape during the cooling and solidification process. In addition, they can be made into any shape after solidification using a method including cutting, grinding, and the like.

In a preferred variant, the bait according to the invention is prepared by mixing the gelling agent with water, solidifying by adding an insecticide active material, bait material, or other auxiliaries if necessary, and then changing the pH of the mixture. . The polymeric capsule is then stirred and stirred into the gel.

Suitable gelling agents are any of a number of hydrophilic materials used to form gels by increasing the viscosity and yield point of the fluid mixture. The following may be mentioned as examples of gelling agents according to the invention: starch, gellan gum, carrageenan gum, agar-agar, casein, gelatin, cilantro gum, antan gum, gelluton gum, polysaccharide gum, pico Colloids, polyacrylate polymers, semisynthetic cellulose derivatives (carboxymethyl-cellulose, etc.), polyvinyl alcohols, carboxyvinylates, bentonites, silicates and colloidal silicas. These gelling agents may be used alone or in a mixture of two or more materials in any ratio. Preferred gelling agents are xanthan gum and polyacrylate polymers. Particularly preferred gelling agents are Rhodopol G and Carbopol EZ-2.

Where appropriate, baits according to the invention may contain further auxiliaries such as stabilizers, repellents, colorants or preservatives.

Examples of stabilizers are calcium salts such as calcium lactate, calcium chloride and the like. Examples of suitable repellents are spicy or bitter materials such as red pepper powder, denatoraum benzoate and the like. Particularly preferred repellent is denathorium benzoate. Examples of preservatives are sorbic acid, sorbate, benzoic acid, benzoate, paraoxybenzoic acid ester, methylisothiazolinone, benzoisothiazolinone, chloromethylisothiazolinone and the like. Particularly preferred preservatives are sorbic acid, sodium benzoate, methylisothiazolinone, benzoisothiazolinone and chloromethylisothiazolinone.

The content of the insecticidal active substance in the bait according to the invention is generally 1 x 10 ^-5 to 10% by weight, and the content of the gelling agent is generally 0.1 to 5% by weight, preferably 0.5 to 2% by weight, The content of the material is generally 10 to 70% by weight, the content of the polymeric capsule is 1 to 10% by weight and the content of other auxiliaries is 0.1 to 25% by weight.

Baits according to the present invention can be used to control various crawling insects by placing them in a location where harmful insects live or pass.

Among the harmful insects that can be controlled are German cockroaches (Blattella germanica), oriental cockroaches (Blatta orientalis), American cockroaches (Periplaneta americana), brown- In addition to band cockroaches (Supella longipalpa), flies, such as housefly (Musca domestica) and ants, such as gilded ants (Tetramorium caespitum), black Garden Ants (Lasius niger), Pharaoh Ants (Monomorium pharanois), Argentine Ants (Linepithema humile), Black-headed Ants (Tapinoma Melanose) Palumoma melanocephalum) should also be mentioned. The bait according to the invention is preferably a cockroach, ie the tree of Blattariae, in particular Blatellidae, and preferably Blatella germanica species or Blattitidae, and preferably Preferably used for controlling Blata orientalis and Periplaneta americana species, as well as other cockroach species, but very particularly preferably for Blatella germanica.

Particular preference is given to controlling insects crawling on the bait according to the invention, preferably insects at the throat, larval or larval stage in the blataria.

The dose of the insecticidal active substance used in the house premises, for example for the control of cockroaches or in external applications for example for the control of ants or Armadillidia, is for example 5 to 500 mg / m ² . The dose of the insecticidal active substance in the bait according to the invention is generally 1 x 10 ^-5 to 10% by weight.

However, the bait composition according to the invention is also active against harmful insect species belonging to the following for example:

Zygentoma, for example Lepisma saccharina;

Orthoptera, for example Acheta domesticus, Gryllotalpa spp.,

Dermaptera, for example Porficula auricularia;

Crustacea, for example Porcellio scaber.

The present invention is described in more detail below with reference to preferred use examples, but is not limited thereto.

Example

TABLE 1

Number of contacts in the cockroach population induced to eat within 10 minutes. Cockroaches are free to choose between standard bait gels with encapsulated aromatics and aroma free materials.

<Table 2>

The total number of dead cockroaches (adults) after a certain time (d = days, w = weeks) after applying a particular bait

Maxforce ^® White IC: 2.15 weight percent imidacloprid substrate

<Table 3>

Total number of cockroaches (larval caterpillars) that died after a certain time after applying a particular bait

TABLE 4

Improved uptake of the product according to the invention (eating)

<Table 5>

Larval stage versus adult rain. A factor of less than 1 means more larvae than adults. Analyzing the contents of the trap, the ratio is reversed in the product according to the invention, ie more adults are caught than larvae.

Table 6 (Blatella Germanica):

Comparison of products according to the invention containing 2.15% of imidaclopid or 1% of clothianidine as an insecticidal active substance. The use of clotianidine in this case further increases efficacy against B. germanica, the German cockroach.

Table 7 (Blata Orientalis):

Comparison of products according to the invention containing 2.15% of imidaclopid or 1% of clothianidine as an insecticidal active substance. The use of clotianidine in this case further increases the efficacy for the oriental cockroach B. orientalis .

Table 8 (Peripheretta Americana):

Comparison of products according to the invention containing 2.15% of imidaclopid or 1% of clothianidine as an insecticidal active substance. The use of clotianidine in this case has obviously increased efficacy against the American cockroach, P. Americana .

Claims (14)

A bait containing a water insoluble polymeric capsule having at least one insecticidal active material, bait material in gel form, and a polymer matrix having a diameter of 0.1 to 5 mm and containing at least one droplet of feeding stimulant. The bait according to claim 1, wherein the polymeric capsule has a diameter of 0.5 to 2 mm. The bait according to claim 1, wherein the insecticidal active substance is selected from the group containing imidacloprid, fipronil, spinosad, indoxacarb and abamectin. The bait according to claim 1, wherein the insecticidal active substance is imidacloprid. The bait according to claim 1, wherein the insecticidal active substance is fipronil. The bait according to claim 1, wherein the insecticidal active substance is clotianidine. The bait according to claim 1, wherein the bait material contains at least one bait feeding agent. The bait according to claim 1, wherein the bait material contains at least one bait feeding agent and at least one feeding stimulant. The bait according to claim 1, wherein the capsule comprises at least one feeding stimulant embedded in the matrix and, if appropriate, an attractant or colorant. The bait according to claim 1, wherein the capsule comprises at least one feeding stimulant and a coloring agent. The bait according to claim 9 or 10, wherein the feeding stimulant is a banana aroma. Use of a bait according to any of the preceding claims. 13. Use according to claim 12, wherein the crawling insect is at the larval or larval stage. Use according to claim 12 or 13, characterized in that the insects belong to the neck of Blataria.